<?php
/*
Copyright (©) 2003-2014 Teus Benschop.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/


class Filter_Search
{

  // This function returns an array of needles to look for.
  // The needles contain the $search word as it occurs in the $string
  // in upper case or lower case or any mixed case.
  public static function needles ($search, $string)
  {
    $needles = array ();
    $position = mb_stripos ($string, $search, 0);
    while ($position !== false) {
      $needle = mb_substr ($string, $position, mb_strlen ($search));
      $needles [] = $needle;
      $position = mb_stripos ($string, $search, $position + 1);
    }
    $needles = array_unique ($needles);
    return $needles;
  }


}

?>
